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bsd_audioirig.h revision 1.1.1.6 
      1 /*
      2  *	$Header: bsd_audioirig.h,v 1.0 93/08/02 12:42:00
      3  */
      4 
      5 #ifndef _BSD_AUDIOIRIG_H_
      6 #define _BSD_AUDIOIRIG_H_
      7 
      8 #include <sys/time.h>
      9 
     10 /********************************************************************/
     11 /* user interface */
     12 
     13 /*
     14  * irig ioctls
     15  */
     16 #if defined(__STDC__) || (!defined(sun) && !defined(ibm032) && !defined(__GNUC))
     17 #define AUDIO_IRIG_OPEN         _IO('A', 50)
     18 #define AUDIO_IRIG_CLOSE        _IO('A', 51)
     19 #define AUDIO_IRIG_SETFORMAT    _IOWR('A', 52, int)
     20 #else
     21 #define AUDIO_IRIG_OPEN         _IO(A, 50)
     22 #define AUDIO_IRIG_CLOSE        _IO(A, 51)
     23 #define AUDIO_IRIG_SETFORMAT    _IOWR(A, 52, int)
     24 #endif
     25 
     26 /*
     27  * irig error codes
     28  */
     29 #define AUDIO_IRIG_BADSIGNAL	0x01
     30 #define AUDIO_IRIG_BADDATA	0x02
     31 #define AUDIO_IRIG_BADSYNC	0x04
     32 #define AUDIO_IRIG_BADCLOCK	0x08
     33 #define AUDIO_IRIG_OLDDATA	0x10
     34 
     35 /********************************************************************/
     36 
     37 /*
     38  * auib definitions
     39  */
     40 #define AUIB_SIZE	(0x0040)
     41 #define AUIB_INC	(0x0008)
     42 #define AUIB_MOD(k)	((k) & 0x0038)
     43 #define AUIB_INIT(ib)	((ib)->ib_head = (ib)->ib_tail = (ib)->ib_lock = \
     44 			 (ib)->phase = (ib)->shi = (ib)->slo = (ib)->high = \
     45 			 (ib)->level0 = (ib)->level1 = \
     46 			 (ib)->shift[0] = (ib)->shift[1] = (ib)->shift[2] = \
     47 			 (ib)->shift[3] = (ib)->sdata[0] = (ib)->sdata[1] = \
     48 			 (ib)->sdata[2] = (ib)->sdata[3] = (ib)->err = 0)
     49 #define AUIB_EMPTY(ib)	((ib)->ib_head == (ib)->ib_tail)
     50 #define AUIB_LEN(ib)	(AUIB_MOD((ib)->ib_tail - (ib)->ib_head))
     51 #define AUIB_LEFT(ib)	(AUIB_MOD((ib)->ib_head - (ib)->ib_tail - 1))
     52 #define IRIGDELAY 3
     53 #define IRIGLEVEL 1355
     54 
     55 #ifndef LOCORE
     56 /*
     57  * irig_time holds IRIG data for one second
     58  */
     59 struct irig_time {
     60         struct timeval  stamp;          /* timestamp */
     61         u_char  bits[13];               /* 100 irig data bits */
     62 	u_char	status;			/* status byte */
     63         char    time[14];               /* time string */
     64 };
     65 
     66 /*
     67  * auib's are used for IRIG data communication between the trap
     68  * handler and the software interrupt.
     69  */
     70 struct auib {
     71 	/* driver variables */
     72 	u_short	active;			/* 0=inactive, else=active */
     73 	u_short	format;			/* time output format */
     74 	struct	irig_time timestr;	/* time structure */
     75 	char	buffer[14];		/* output formation buffer */
     76 
     77 	/* hardware interrupt variables */
     78 	struct	timeval tv1,tv2,tv3;	/* time stamps (median filter) */
     79 	int	level0,level1;		/* lo/hi input levels */
     80 	int	level;			/* decision level */
     81 	int	high;			/* recent largest sample */
     82 	int	sl0,sl1;		/* recent sample levels */
     83 	int	lasts;			/* last sample value */
     84 	u_short	scount;			/* sample count */
     85 	u_long	eacc;			/* 10-bit element accumulator */
     86 	u_long	ebit;			/* current bit in element */
     87 	u_char	r_level,mmr1;		/* recording level 0-255 */
     88 	int	shi,slo,phase;		/* AGC variables */
     89 	u_long	err;			/* error status bits */
     90 	int	ecount;			/* count of elements this second */
     91 	long	shift[4];		/* shift register of pos ident */
     92 	long	sdata[4];		/* shift register of symbols */
     93 
     94 	int	ib_head;		/* queue head */
     95 	int	ib_tail;		/* queue tail */
     96 	u_short	ib_lock;		/* queue head lock */
     97 	u_long	ib_data[AUIB_SIZE];	/* data buffer */
     98 };
     99 #endif
    100 
    101 #endif /* _BSD_AUDIOIRIG_H_ */
    102